diff --git a/euri_mklive/cli.py b/euri_mklive/cli.py
index 6986689..ce6bf35 100644
--- a/euri_mklive/cli.py
+++ b/euri_mklive/cli.py
@@ -120,13 +120,10 @@ def interactive(mode: str | None, output: Path | None, keep_rootfs: bool, yes: b
             args.append("--keep-rootfs")
         if output:
             args.extend(["-o", str(output)])
-        env = os.environ.copy()
-        # include user site-packages so root can find click/pyyaml/rich/questionary
+        # use 'sudo env PYTHONPATH=...' so root finds user-installed packages
         user_site = site.getusersitepackages()
-        if user_site and os.path.isdir(user_site):
-            existing = env.get("PYTHONPATH", "")
-            env["PYTHONPATH"] = f"{user_site}:{existing}" if existing else user_site
-        _sp.run(["sudo"] + args, check=True, env=env)
+        sudo_cmd = ["sudo", "env", f"PYTHONPATH={user_site}"] + args
+        _sp.run(sudo_cmd, check=True)
         return
 
     if cfg["_mode"] == "fakeroot":